Electronic keyboard musical instrument

- Yamaha Corporation
Description

FIG. 1 is a top front perspective view of an electronic keyboard musical instrument showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D289411 April 21, 1987 Bellini
D289412 April 21, 1987 Bellini
D290370 June 16, 1987 Bellini
D317774 June 25, 1991 Mizushima
D317931 July 2, 1991 Koide et al.
D318058 July 9, 1991 Koide
D320032 September 17, 1991 Hoshina
4635521 January 13, 1987 Bellini
Foreign Patent Documents
721750 August 1987 JPX
Other references
  • Hong Kong Toys, 1987, p. 90, (Keyboard, centre at the page). Evans Catalog, 1987-1988, p. 311 (Casio Keyboard). Music Trades, Apr. 1989, p. 24 (Yamaha DSR-2000 Electronic Keyboard).
Patent History
Patent number: D325597
Type: Grant
Filed: Jun 21, 1990
Date of Patent: Apr 21, 1992
Assignee: Yamaha Corporation (Shizuoka)
Inventor: Nobuki Sakagami (Tokyo)
Primary Examiner: Bernard Ansher
Assistant Examiner: Adir Aronovich
Law Firm: Weingarten, Schurgin, Gagnebin & Hayes
Application Number: 7/541,345
Classifications